Whenever you want to present some text according to a criteria: if the criteria is met then present this text, if the criteria isn’t met present that text...

The if statement is a so-called conditional statement. It allows you to branch your code depending on whether certain conditions are met or not. C# has two such conditional statements, the if statement and the switch statement...

The switch statement offers the programmer the capability to choose a specific block of code from a set of mutually exclusive ones. It is similar but not identical to the if statement. The block of code that will be chosen is not known before the execution of the program...

This tutorial will show you the basics of switch statments.

An introduction to basic PHP. The tags, variables, loops, if statements, how to include files and functions, are all well explained in this tutorial.

MySQL FAQs - Understanding SQL CREATE, ALTER and DROP Statements.